Note that nearly every loudspeaker has an inductive rise in the top octave, so not only is the load not 8 ohms, it's not resistive. Not that this matters at minuscule fractions of a wavelength...
Solderdude. My suggestion is to use unconditionally stable amplifiers (99% of all amps).
See another simulation TymsCables.
That amplifier seems to be the Cambridge Audio Topaz AM10. I can't find a measurement of it but the specs say it is down -1 dB between 5 Hz and 50 kHz. That tells me its actual bandwidth is quite bit better than this. So my point remains. Square wave with wide bandwidth is not a proper test unless it is band limited to the audible frequencies.
Note that nearly every loudspeaker has an inductive rise in the top octave, so not only is the load not 8 ohms, it's not resistive. Not that this matters at minuscule fractions of a wavelength...
We put a Zobel network in the speaker end of Isolda cable to account for this. 0.22uF in series with 10R across the wires in the box.
2 x 1.5uh is in the amplifier end.
Why not send a sample of your cable to Amir and see what he measures compared to generic cables.
I wish I could use my wife to trouble shoot issues... could come in handy.
Seems like I married the wrong one though.
Nah, it is easy picking. There is a reason in the entire library of thousands of papers at AES, not one speaks of the matters in your documents.You are all clutching at straws.
The zobel at the speaker side makes sense.
Would such also be needed for line level interlinks ?
Luckily, most interconnects have Zc between 50 ohms and 100 ohms, which is pretty close to source impedances of 50 to 80 ohms (source), into 10-20K ohms (load), (back matching Deletraz). This is fine and not too bad.The zobel at the speaker side makes sense.
Would such also be needed for line level interlinks ?
From the same paper:
View attachment 23983
Exactly what instruments have you used to make this statement? My Audio Precision analyzer has a bandwidth of 1 Mhz. It can generate signals up to 200 kHz. It has a dynamic range better than any power amplifier by far. Its frequency response is ruler flat. In every way the analyzer exceeds our hearing sensitivity sometimes by massive (orders of magnitude) more sensitivity.
The art of engineering is to optimise your compromise.
In your cable geometry 'evidence' simulation I see you are using a 5MHz squarewave (with almost infinite BW) which produces 2.5MHz ringing and is supposed to be evidence of the poor SQ.
How is that (poor) simulation relevant to audio even when we consider the audible band is 50kHz.
Why would a reflection cause a slower rising edge at the end point of the cable ?
One would think the LCR low pass filter that is created is responsible for this.
Why would an almost immediate reflection (which would be heavily damped by the close to 0 Ohm source) cause the voltage to rise slower at the end point ? They would be in phase as the wavelength is km long in audio frequencies... why would reflections 'cancel' when they would always be in phase ?